opt-testcases/*.sh are not executable
The *.sh files in opt-testcases cannot be executed directly: they can only
be sourced by ssl-opt.sh. So don't make them executable and don't give them
a shebang line.
Also make sure that the first paragraph of each file is a short description.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/tests/opt-testcases/tls13-misc.sh b/tests/opt-testcases/tls13-misc.sh
old mode 100755
new mode 100644
index f6520a1..ac91093
--- a/tests/opt-testcases/tls13-misc.sh
+++ b/tests/opt-testcases/tls13-misc.sh
@@ -1,7 +1,5 @@
-#!/bin/sh
+# Miscellaneous tests of TLS 1.3 features.
-# tls13-misc.sh
-#
# Copyright The Mbed TLS Contributors
# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
#